Arlington, VA

6:34 AM EST on January 16, 2017 (GMT -0500)
Ronald Reagan Washington National

Weather History for KDCA - December, 2011

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Month of December, 2011

  Max Avg Min Sum
Temperature  
Max Temperature 63 °F 53 °F 43 °F
Mean Temperature 58 °F 45 °F 36 °F
Min Temperature 55 °F 37 °F 29 °F
Degree Days  
Heating Degree Days (base 65) 29 20 7 613
Cooling Degree Days (base 65) 0 0 0 0
Growing Degree Days (base 50) 8 1 0 25
Dew Point  
Dew Point 61 °F 34 °F 10 °F
Precipitation  
Precipitation 3.10 in 0.18 in 0.00 in 4.90 in
Snowdepth 0.0 in 0.0 in 0.0 in -
Wind  
Wind 31 mph 7 mph 0 mph
Gust Wind 41 mph 23 mph 16 mph
Sea Level Pressure  
Sea Level Pressure 30.71 in 30.19 in 29.43 in

Monthly Weather History Graph

Monthly Weather History Graph

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Date:

Astronomy

Dec. 31, 2011 Rise Set
Actual Time 7:26 AM EST 4:55 PM EST
Civil Twilight 6:56 AM EST 5:25 PM EST
Nautical Twilight 6:23 AM EST 5:59 PM EST
Astronomical Twilight 5:50 AM EST 6:31 PM EST
Moon 11:15 AM EST (12/31) No Moon Set
Length of Visible Light 10h 29m
Length of Day
9h 29m
Waxing Crescent, 45% of the Moon is Illuminated
Dec 31
Waxing Crescent
Jan 1
First Quarter
Jan 9
Full
Jan 16
Last Quarter
Jan 23
New

Daily Weather History & Observations

2011 Temp. (°F) Dew Point (°F) Humidity (%) Sea Level Press. (in) Visibility (mi) Wind (mph) Precip. (in) Events
Dec high avg low high avg low high avg low high avg low high avg low high avg high sum  
1 52 45 38 31 28 25 70 56 41 30.36 30.29 30.14 10 10 10 18 9 23 0.00  
2 55 45 34 35 31 26 85 62 38 30.57 30.40 30.32 10 10 8 15 4 20 0.00  
3 51 43 35 35 30 27 76 61 46 30.69 30.63 30.58 10 10 10 12 4 15 0.00  
4 55 46 37 43 39 34 92 76 59 30.58 30.48 30.40 10 10 7 10 4 15 0.00  
5 60 51 42 54 46 40 96 80 64 30.39 30.29 30.17 10 10 7 14 3 16 0.00  
6 60 58 55 61 57 53 100 89 78 30.14 30.00 29.92 10 8 4 17 10 22 0.24 Fog , Rain
7 60 49 37 59 52 35 100 93 85 29.91 29.72 29.52 10 4 1 31 9 41 3.10 Fog , Rain , Snow
8 45 40 35 34 26 22 79 62 45 30.37 30.20 29.84 10 10 10 24 10 33 0.00  
9 51 43 34 37 33 27 86 66 46 30.35 30.29 30.23 10 10 10 16 4 22 0.00  
10 47 40 32 31 22 13 79 55 31 30.56 30.38 30.25 10 10 10 22 10 26 0.00  
11 43 36 29 24 18 10 69 48 27 30.71 30.64 30.56 10 10 10 13 3 15 0.00  
12 46 38 29 34 27 24 85 68 51 30.63 30.56 30.49 10 10 9 8 3 9 0.00  
13 52 41 30 32 27 24 85 60 35 30.48 30.44 30.40 10 10 7 15 6 20 0.00  
14 50 44 38 36 33 30 85 69 52 30.45 30.39 30.30 10 10 8 8 3 9 T  
15 63 53 43 51 42 34 70 61 52 30.28 30.05 29.88 10 10 10 23 12 30 0.01 Rain
16 62 53 43 51 30 23 80 56 32 30.25 30.15 29.88 10 10 10 26 11 31 0.00  
17 43 38 33 26 24 21 75 60 45 30.25 30.22 30.17 10 10 10 18 10 24 T Snow
18 44 38 32 28 24 21 75 60 45 30.36 30.29 30.23 10 10 10 20 7 23 0.00  
19 52 41 29 33 29 25 92 67 41 30.32 30.19 30.07 10 10 9 15 7 18 0.00  
20 57 51 45 41 37 32 66 60 54 30.19 30.14 30.09 10 10 10 10 3 14 0.00  
21 61 54 47 59 52 37 97 82 66 30.09 29.91 29.81 10 8 2 18 9 25 0.12 Rain
22 62 54 46 54 46 42 93 73 53 30.16 30.00 29.82 10 7 2 13 3 16 0.53 Rain
23 53 49 44 50 42 31 96 73 50 30.26 30.00 29.77 10 8 2 24 11 30 0.29 Rain
24 46 41 36 36 27 21 70 54 38 30.48 30.40 30.24 10 10 10 25 8 32 T Rain
25 48 41 34 36 31 26 82 66 49 30.40 30.22 30.03 10 10 10 13 6 15 0.00  
26 50 44 37 32 27 24 75 57 39 30.35 30.26 30.05 10 10 10 28 10 35 0.00  
27 55 47 39 52 43 30 96 79 62 30.23 29.64 29.43 10 6 2 23 7 33 0.61 Rain
28 49 42 35 38 24 15 89 63 36 30.03 29.81 29.54 10 10 10 28 12 38 0.00  
29 44 38 31 32 25 18 67 57 47 30.11 30.03 29.98 10 10 10 13 5 18 0.00  
30 54 45 35 38 32 28 76 61 45 30.07 29.98 29.87 10 10 10 14 5 17 0.00  
31 62 54 46 44 39 37 77 58 39 30.13 29.96 29.83 10 10 10 22 9 28 T Rain